22212023 has 4 divisors (see below), whose sum is σ = 22419720.
Its totient is φ = 22004328.
The previous prime is 22212019. The next prime is 22212049. The reversal of 22212023 is 32021222.
It is a semiprime because it is the product of two primes.
It is a cyclic number.
It is not a de Polignac number, because 22212023 - 22 = 22212019 is a prime.
It is a Duffinian number.
It is a plaindrome in base 8.
It is a junction number, because it is equal to n+sod(n) for n = 22211989 and 22212007.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (22212823) by changing a digit.
It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 103688 + ... + 103901.
It is an arithmetic number, because the mean of its divisors is an integer number (5604930).
Almost surely, 222212023 is an apocalyptic number.
22212023 is a deficient number, since it is larger than the sum of its proper divisors (207697).
22212023 is a wasteful number, since it uses less digits than its factorization.
22212023 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 207696.
The product of its (nonzero) digits is 96, while the sum is 14.
The square root of 22212023 is about 4712.9632928764.
The cubic root of 22212023 is about 281.1012033994.
Adding to 22212023 its reverse (32021222), we get a palindrome (54233245).
The spelling of 22212023 in words is "twenty-two million, two hundred twelve thousand, twenty-three".